Perpetual calendar.



No. 771.742. 7 PATEN'TED OCT. 4, 1904. T. OSHAUGHNESSY.

PERPETUAL CALENDAR.

APPLICATION FILED JAN.11,-1904.

N0 MODEL.

' 14 W/TNE8SE8. M/VENTUR ffiomas QZJZaug/messy 7 BY 7 ATTUR/V UNITEDSTATES Patented October 4, 1904.

PATENT OFFICE.

PERPETUAL CALENDAR;

SPECIFICATION formingpart of Letters Patent No. 771,742, dated October4, 1904. Application filed January 11, 1904,. Serial No. 188,568. (Nomodel.

To all whom it may concern:

Be it known that I, THoMAs OSHAUGH- NESSY, a citizen of the UnitedStates, and a resident of San Jose, in the county of Santa Clara andState of California, have invented a new and Improved PerpetualCalendar, of which the following is a full, clear, and exactdescription.

The purpose of my invention is to provide a simple and accurate form ofperpetual calendar that may be set for any month in any year, leap-yearincluded, and in any century within the scope of. the calendar and theday of week of any date may be quickly and readily ascertained withoutcalculation on the part of the operator.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of one form of the improved calendar. Fig. 2 isa vertical central section through the same, and Fig. 3 is a plan viewof the covering for the cylinder employed laid flat.

A represents a frame in the form of a base having a chamber 10 thereinbetween its ends, which chamber is open at the back or bottom and haspreferably a segmental portion 10,

' connecting with a recess or depression 11, produced in the outer orupper face of the frame or base, as is shown in Fig. 2. A transparentpane 12 is fitted in this recess, extending over two sheets B and C,separated by a space 12, whereby to expose'a part of the periphery of adrum or roller D, journaled in the said chamber 10 and turned byconnected knobs 13 at the outer side portions of the frame or byequivalent means.

The periphery of the drum or roller D is covered by a sheet E, read inconnection with the sheets B and C. The sheet C has an upper panel 6,ruled off and provided with figures between the rulings reading from 1to 31, inclusive, and having an arrangefigures on a monthly panel of theordinary calendar, as is shown in Fig. 1that is to say, the panel 6 isruled in seven columns, corresponding to the seven days of a week. Asecond panel 6 may be and preferably is produced below thenotation-panel b for the month, being correspondingly ruled in sevencolumns. This lower panel 6 is adapted to contain the first figures ofcenturies, and the columns are numbered in opposite directions from thecenter one, as 1, 2, 3. Each centurycolumn containslongitudinally-arranged figures properly calculatedas, for example, thecenter column contains the figures "15, 19, 23, 4c, 11 and 18, the firstcolumn to the right 3, 10, and 17, the second column to the right 18,22, 2, 9, 16, and the third column to the right 1, 8 and 15. The figuresin the first column to the left read 16, 20, 24, 5, 12, and 19, thesecond column to the left 6, 13, and 20, and the third column to theleft 17, 21, 25 0, 7, and 14.. The upper sheet is likewise ruled inseven columns, corresponding to the columns in the notation-panel 5 andcentury-panel t, and each column on the sheet B contains the terminalsof the figures denoting all the years expressed in the centuries setforth in the correspond ing century-column, the arrangement of theterminals of the years being in predetermined and previously-calculatedorder, as is shown by Fig. 1.

The years which are leap-years are distinguished from the other years bya difference in the character of the figures or by the figures beingproduced in a different color; but the same color or character offigures is employed for all leap-years, as is likewise the samepredetermined color or character of type for all of the complete years.

The sheet E (shown in detail in Fig. 3 and which is secured in anysuitable manner to the periphery of the roller D) is ruled in sevencolumns adapted when the roller is in position to register withcorresponding columns on the sheet containing the terminals of theyears, the notation-panel, and the centurypanel. This sheet E isfurthermore ruled so mentcorresponding to the arrangement of the that itis divided into a series of squares 1e,

reading seven each way, the sheet E being of rectangular formation. Thusthe squares on the sheet E represent the square of seven. Each panelcontains the names, preferably abbreviated, of one or more months of theyear, or the figures 1 to 12 representing the months, and January andFebruary in ale-apyear are made in the same color or are of the sametype as that color or type used to designate theleap-years on the sheetB. Each series of squares 14:, reading longitudinally of the roller Dand which as the roller is turned appear in their longitudinal order atthe opening 12 between the sheets B and C, are provided with theabbreviations or the full names of a week, produced one name on eachsquare. When the calendar is operated for a leap-year, use thedesignated January and February, and the month and week are read thesame as for any other year.

The opening 1E2 is only sufficiently large to permit one longitudinalrow of squares containing the names of a complete week to be visible atone time from the front of the machine, as is shown in Fig. 1, and thesheet E is so arranged on the roller or drumD that as a longitudinalseries of squares 14 on the sheet E is made visible at the upper portionof the machine the said squares in such alinement will also aline thevarious columns on the sheet for years, the notation-panel, and thecenturypanel.

Centuries are ordinarily counted under the old style and new style ofreckoning, and in order that the distinction may be made very plain thefigures representing the old style are made heavier or in one color andthe figures representing the new style are in a different color or arelighter in print; but it will be understood that any means most suitablemay be employed to distinguish between the two styles, so that onecannot readily be mistaken for the other. i

I desire it to be understood that the panel 6', containing the firstfigures of the centuries, may be omitted and that the index-sheet Einstead of being placed around a roller or drum may be used fiat, beingsimply mounted to slide beneath the opening 12* between thenotation-panel?) and the sheet B, bearing the terminals of the years.

In operation if it is desired to ascertain what particular day of theweek is designated by a certain date in a given month of a given year inthe past or what day will correspond to a given month in a given year inthe past or future it is simply necessary to move the index-sheet E bymeans of the roller D or otherwise until the month in question in asquare 14 on the index-sheet registers with a corresponding vertical orlongitudinal column on the sheet B for years containing the terminalfigure of the year in which the month in question occurs, whereupon thetransverse reading of the line of squares 14 at the opening 12, whichgives the reading of all the days of the week, is read in the usual waywith reference to the figures on the notationpanel- 7),- but if the yearis a leap-year the January and February in the same color or styleshould be used in obtaining the desired data in a leap-year.

The rule for reading in the centuries for the present and all centurieswhose first figures appear in the center column of the panel 5' is toplace the desired month at the opening 12 under the desired year. l/Vithreference to the reading of the figures in the century-columns 1 2 3 tothe left of the center column place the month desired respectively one,two, or three columns to the left of the column containing the suitableterminal for the year desired. The figures in the centuryeolumns 1 2 3to the right of the center column are read in the same manner as thefigures in the corresponding column to the left, except that the desiredmonth is placed one, two, or three columns to the right of thatcontaining the terminal for the desired year. When the year'is aleap-year, place the red January and February at the opening 12 underthe desired year.

I desire it to be understood that the names of the months and the daysof the week may be produced each in a different color or each printed ina different style of type and that the calendar may be made perfectlyflat, in which event a flat slide will be substituted for the cylinderat the opening 12.

Having thus described my invention,I claim as new and desire to secureby Letters Patent- 1. In a perpetual calendar,a sheet having theterminals of years produced thereon in predetermined order and incolumns corresponding in number to the number of the days in a week, anotation-panel separated from the sheet expressing years and havingcorresponding columns and consecutive figures expressing the number ofdays in a calendar month, and an index-sheet movable at the spacebetween the sheet expressing years and the notation-panel, being read inconnection with both, which index-sheet is divided into columnscorresponding in number to the number of days in a week, the saidcolumns being subdivided into squares reading in equal numbertransversely and longitudinally of the sheet, each of which spacescontains the name of the day of a week and the names of the months inpredetermined arrangement, the months of January and February forleap-years and the terminals of the years which represent leap-yearsbeing similarly designated and distinguished from the other months andother years, as described.

2. In a perpetual calendar, a sheet having the terminal of yearsproduced thereon in predetermined order and in columns corresponding innumber to the number of days in a week, a notation-panel separated fromthe sheet expressing years, and having corresponding columns andconsecutive figures expressing the number of days in a calendar month, apanel for centuries ruled correspondingly to the notation-panel andreading in connection therewith, which century-panel has predeterminedarranged figures in its columns, an index-sheet mounted for movement atthe back "of the space between the sheet expressing years and thenotation-panel, being read in connection with both of the latter, whichindex-sheet is divided into columns corresponding in number to thenumber of days in a week, the said columns being divided into transverseseries of squares, the series being adapted to be read one after theother at the said opening between the sheet expressing years and thenotation-panel, each square on the index-sheet having produced thereon aday of the weelgwhich days in a given series represent all the days of aweek, each square on the said index-sheet being further provided withthe names of months predetermined arranged, sundry of the terminals ofthe years and January and February being correspondingly designated torepresent leap-years and distinguished from the ordinary calendar yearsand months, as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS OSHAUGHNESSY.

Witnesses:

L. H. CASE, WESLEY W. HASTINGS.

